RE: A89: System information

To: <assembly-89@lists.ticalc.org>
Subject: RE: A89: System information
From: "Edward F. Behn, Jr." <behne@rpi.edu>
Date: Thu, 7 Oct 1999 23:39:34 -0400
Importance: Normal
In-Reply-To: <37FD67A1.2C87A30B@hem.passagen.se>
Reply-To: assembly-89@lists.ticalc.org


That's a good point.  I did forget about the interrupts.

-----Original Message-----
From: owner-assembly-89@lists.ticalc.org
[mailto:owner-assembly-89@lists.ticalc.org]On Behalf Of Olle Hedman
Sent: Thursday, October 07, 1999 11:40 PM
To: assembly-89@lists.ticalc.org
Subject: Re: A89: System information



You have to know quite a lot about how the hardware works to.
A calc isnt just a processor and a bunch of ram. You have a screen and
timers
and interrupts, and interruptcontrollers and stuff to..
You need to know how theese work too, to make an accurate emulator.

//Olle

"Edward F. Behn, Jr." wrote:
>
> Not to minimize Rusty Wagner's considerable contribution to TI programming
> but to make an emulator (theoretically I've never even tried) you really
> would only need to know the processor's op-codes and the calc's I/O.  You
> could write code to simulate the processor, show the output, and accept
> input through the normal channels.
>                                -Ed
>     PS.  I don't really know what I'm talking about here.  I could be
> totally off.
>
> -----Original Message-----
> From: owner-assembly-89@lists.ticalc.org
> [mailto:owner-assembly-89@lists.ticalc.org]On Behalf Of Pizza of Hut
> Sent: Thursday, October 07, 1999 9:12 PM
> To: Assembly-89
> Subject: A89: System information
>
> Just out of curiosity, does anyone know where people like Rusty Wagner
> and the Doors team get all their information on the TI-89's system
> routines for use in developing shells?
>
> --
> Pizza of Hut
> http://www.antishrine.sacone.com/

References:

Re: A89: System information

From: Olle Hedman <oh@hem.passagen.se>